Joint High Speed Vessel for US Marines

According to a news report, General James Conway, Commandant of the U.S. Marine Corps, is looking at using the Joint High Speed Vessel (JHSV) as a Marine troop carrier. He is concerned that new US Navy transport ships lack a well deck to launch their equipment at sea. But it occurs to me that the Marines simply drive their Amphibious Assault Vehicles (AAV) off the ramp of the well deck, they don't flood the deck unless unloading a landing craft. The JHSV is designed with a rear ramp to unload Abrams main battle tanks. The ramp could be lowered into the water and the Marines drive their AAVs off the end. This would also have the advantage that the AAVs could be launched when the ship is underway. It may be possible to recover the AAV's replacement the Expeditionary Fighting Vehicle (EFV) at speed on water.